Help me find the T shop files

[gronnmann]

So, what I want is to make the T shop have more columns than the default 3, but can't locate the T shop files in the server.

[c👌de_g🎷]

[url]https://github.com/garrynewman/garrysmod/blob/ead2b4d7f05681e577935fef657d4a4d962091e6/garrysmod/gamemodes/terrortown/gamemode/cl_equip.lua#L153[/url]